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*A small company called RetroZone, the first company to publish games on the NES in over a decade, uses a multi-region lockout chip for NTSC, PAL A, and PAL B called the Ciclone which was created by reverse engineering Tengen's "Rabbit" chip. It is the only lockout chip in existence that will allow games to be played in more than one region. It is intended to make the games playable on the original NES-001 hardware that uses the 10NES lockout chip and the two other regions - the other region free alternative would be the top-loading NES, which does not feature the lockout chip. The Ciclone chip is the first lockout chip to be developed after the patent for the 10NES had expired.

[[Category:Chip]]